[activehybrid]

The MXM4 tires on the Odyssey are not the "Accoustic" with foam.
I will try to take some noise measurements with my iPhone, however to make comparisons without using the same road surface or road condition could be misleading.

True , I did some sound deadening stuff and getting good results

 

[trcollins59]

True , I did some sound deadening stuff and getting good results

What type of sound deadening did you do, location, etc.
We have Elite which if I remember correctly has sound deadening upgrades including the windows and windshield.
Which trim level Odyssey do you have?
The sound has always been more than satisfactory on all surfaces.

 

[activehybrid]

What type of sound deadening did you do, location, etc.
We have Elite which if I remember correctly has sound deadening upgrades including the windows and windshield.
Which trim level Odyssey do you have?
The sound has always been more than satisfactory on all surfaces.

I have 2024 touring, only difference between it and elite is elite has double pane acoustic in sliding doors that’s it

I did trunk , all floor , doors , wheel wells with level one and two sound deadening material

I’m getting 60-65 at 75mph ( highway makes a big difference ), I tested with 22 Highlander that gets 75 at 75 mph

 

[trcollins59]

I have 2024 touring, only difference between it and elite is elite has double pane acoustic in sliding doors that’s it

I did trunk , all floor , doors , wheel wells with level one and two sound deadening material

I’m getting 60-65 at 75mph ( highway makes a big difference ), I tested with 22 Highlander that gets 75 at 75 mph

I will measure next time on highway at 75mph. I live on an island so it may be a while until I get a chance to measure.
It sounds like your setup will achieve the quietest possible level.
How many hours did it take you to add all that sound deadening material?

 

[trcollins59]

I will measure next time on highway at 75mph. I live on an island so it may be a while until I get a chance to measure.
It sounds like your setup will achieve the quietest possible level.
How many hours did it take you to add all that sound deadening material?

Update:

First Measure: Started measuring 1 mile constant speed at 40mph, cars passing on side of vehicle, min 56, max 66 (truck passing on side), avg 58.0

Second Measure: 3 miles, two lane one direction, cars passing on side of vehicle, min stopped at stop light, Max 75 db at acceleration, 50 db at idle, avg. 57.4

 

[activehybrid]

I will measure next time on highway at 75mph. I live on an island so it may be a while until I get a chance to measure.
It sounds like your setup will achieve the quietest possible level.
How many hours did it take you to add all that sound deadening material?

I used decibel x app with iPhone 13 Pro Max to measure decibel levels

entire thing took 1-3 weeks as a side project, it’s not hard , just takes massive time